Primary hypertension is in contrast to secondary hypertension. As the name suggests, primary hypertension refers to hypertension with an unknown cause or hypertension caused by genetics.
Generally speaking, patients with this condition only need to take oral antihypertensive medications. However, to make a distinction, it is best to check for secondary factors. For example:1. An adrenal CT scan2. A renal vascular ultrasound3. A head MRI

Some hospitals also offer a test called the "Six - item Hypertension Test." If there are no problems with these examinations, then it is called primary hypertension.
